No it's not bad... but you can put all of your nodes under one account. Just keep using the same e-mail over and over to register new nodes.
You can merge your 2 accounts into one quite easily. Just log into your account here.
http://app.d2ol.com/memberServices/memberLogin.jsp
When your page comes up you will see "merge Members" at the top.
Enter your password (the one you used to log into the link above)
Then enter your other username (The one you
didn't log into)
Then enter the password for your other account.
Then you're all fixed!
In the future when you add a new node, or PC, just register it with the same e-mail you used to register your account that you kept. When you log into the page above you will see a section on the first page for you to add your new nodes :) Hope this helps!